Chart's label cannot be displayed

[jeff....@gmail.com]

I think the tool is great but it is still at very early stage that it has lot of bugs.
I am not able to download from files.majorsilence.com for the binary, and I downloaded the latest source and build in VS2017 myself.
Having fixed problem related to RDL Designer's "Query Parameter" on OLEDB Provider for Oracle (it always prompt me to explicitly specify data type for parameter for oledb), I moved on and tried the Pie Chart (which is the reason I have to look for a reporting tool), but I found the Label cannot be display with different way I tried (if anyone can help?).
And, those "expression" / "formula" field has no validation, never know if used correct or wrong method to do it, this put me in trouble.